TiFlash 处于Down状态,如何启动和排查原因

May 19 09:50:02 host5024 systemd: Started Session 18470 of user root.
May 19 10:00:01 host5024 systemd: Started Session 18471 of user root.
May 19 10:01:01 host5024 systemd: Started Session 18472 of user root.
May 19 10:10:01 host5024 systemd: Started Session 18473 of user root.
May 19 10:20:01 host5024 systemd: Started Session 18474 of user root.
May 19 10:30:01 host5024 systemd: Started Session 18475 of user root.
May 19 10:40:01 host5024 systemd: Started Session 18476 of user root.
May 19 10:50:01 host5024 systemd: Started Session 18477 of user root.
May 19 11:00:01 host5024 systemd: Started Session 18478 of user root.
May 19 11:01:01 host5024 systemd: Started Session 18479 of user root.
May 19 11:10:01 host5024 systemd: Started Session 18480 of user root.
May 19 11:20:01 host5024 systemd: Started Session 18481 of user root.
May 19 11:26:40 host5024 kernel: PDLeaderLoop[23438]: segfault at 30 ip 00000000091555c8 sp 00007f0b91dadeb0 error 4
May 19 11:26:40 host5024 abrt-hook-ccpp: Process 23325 (tiflash) of user 1000 killed by SIGSEGV - dumping core